2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho

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Option How it Works Pros Cons Suitable Areas for use in Idaho 6.Chemical 2,4-D Moderate to highly effective Public perception Inexpensive Systemic, can kill entire plant, longer control Endothall Broad spectrum, contact herbicide that inhibits protien synthesis Effective May impact non-target plants, especially native pondweeds, coontail, elodea, niads Shoreline, localized treatments. Waterbody littoral zones heavily infested with EWM. Endothall is a contact herbicide that can supress EWM, typically short term. Could be good choice in flowing waters where plant suppression is the goal Applied as liquid or granules Can be selective depending on concentration and seaonal timing Needs to be applied several years in a row Can be combined with 2, 4-D for early season treatments Ineffective in muddy of cold water (
Option How it Works Pros Cons Suitable Areas for use in Idaho 6. Chemical Fluridone Few label restrictions on use after treatment Requires long contact period Some water use restrictions Triclopyr Diquat Systemic herbicide selective to broadleaf plants that disrupts enzyme function More effective on dicots Impacts may occur on native plants at high doses Applied as flake or liquid Fast acting Re-treatment opportunities may be limited due to max. seasonal rate Some water use restrictions Broad-spectrum, contact herbicide that disrupts cellular function Rapid action May impact non-taget plants, especially native pondweeds, coontail, elodea, niads Applied as liquid Needs to be applied several years Effective for spot treatments of EWM and is somewhat selective Shoreline, localized treatments. Used for short term control, fast acting, suitable for spot treatments. Can be used on flowing water. Does not affect underground portions of plant Some water use restrictions Turbid water or algae can interfere with effectiveness 80
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2008 STATEWIDE STRATEGIC PLAN FOR E
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A Statewide Strategic Plan for Eura
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I. Introduction In April 2006 the I
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V. Idaho Eurasian Watermilfoil Peer
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and contractor oversight to effecti
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Figure 3. Eurasian watermilfoil sur
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• Task 3: Establish appropriate m
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appear first. Eastern Idaho should
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B. Description A number of milfoil
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and boating activities, with each f
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the state. The highest priority wee
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and provides assistance to cooperat
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the boat with a GPS to the predeter
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IX. Eurasian Watermilfoil Managemen
Page 29 and 30: Bottom barriers are appropriate in
Page 31 and 32: emaining root masses. Duration of c
Page 33 and 34: Search for a classical biological c
Page 35 and 36: sources of dilution need to be inve
Page 37 and 38: 3. Fluridone Fluridone (Trade names
Page 39 and 40: X. Current Eurasian Watermilfoil Ma
Page 41 and 42: 2007 Total project cost: $19,400 IS
Page 43 and 44: 2007 Total project cost: $82,660 IS
Page 45 and 46: C. Effect of sediment on efficacy o
Page 47 and 48: scientists and weevils could easily
Page 49 and 50: Surveys for pathogens were restrict
Page 51 and 52: Creed Jr., R.P. and S.P. Sheldon. 1
Page 53 and 54: Komarov, V.L. 1929. Flora poluostro
Page 55 and 56: Moody, M.L., Les, D.H. in Press. Di
Page 57 and 58: Westerdahl, H.E. and K.D. Getsinger
Page 59 and 60: as transparent and publicly availab
Page 61 and 62: to amend if they require legal revi
Page 63 and 64: Recommendation 2.3: Program intent
Page 65 and 66: Excessive uncontrolled growth of aq
Page 67 and 68: species or the reduction of their p
Page 69 and 70: Some or many of these techniques ar
Page 71 and 72: ISDA Response: Given that ISDA does
Page 73 and 74: expertise found in warmer climates.
Page 75 and 76: umors and public fear of management
Page 77 and 78: Option How it Works Pros Cons Suita
Page 79: Option How it Works Pros Cons Suita
Page 83 and 84: Costs include estimated raw materia
Page 85: Office Visits Quantity What is the
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2008 Statewide Strategic Plan for Eurasian Watermilfoil in Idaho

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